VulnerabilityAnalyzed
CVE-2016-7836
SKYSEA Client View Improper Authentication Vulnerability
KEVCRITICAL 9.8EPSS 19.4%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 November 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
SKYSEA Client View Ver.11.221.03 and earlier allows remote code execution via a flaw in processing authentication on the TCP connection with the management console program.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 19.38% probability · 97th percentile
- CISA KEV
- Listed 14 October 2025 · due 4 November 2025
- Weakness
- CWE-287
- Affected
- skygroup/skysea client view
- Source
- vultures@jpcert.or.jp
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.skyseaclientview.net/news/161221/ ; https://nvd.nist.gov/vuln/detail/CVE-2016-7836
References
- http://www.securityfocus.com/bid/95062Third Party Advisory, VDB Entry
- http://www.skyseaclientview.net/news/161221/Vendor Advisory
- https://jvn.jp/en/jp/JVN84995847/index.htmlThird Party Advisory, VDB Entry
- https://www.skygroup.jp/security-info/170308.htmlExploit, Technical Description, Third Party Advisory
- http://www.securityfocus.com/bid/95062Third Party Advisory, VDB Entry
- http://www.skyseaclientview.net/news/161221/Vendor Advisory
- https://jvn.jp/en/jp/JVN84995847/index.htmlThird Party Advisory, VDB Entry
- https://www.skygroup.jp/security-info/170308.htmlExploit, Technical Description, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7836US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.